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Finding the Fourth Proportional to 525,853.90, 788,780.85 and 193,386.70

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Solution

The fourth proportional to 525,853.90, 788,780.85 and 193,386.70 is: 290,080.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,853.90 : 788,780.85 = 193,386.70 : x
  2. Step 2: Convert to fraction form
    525,853.90/788,780.85 = 193,386.70/x
  3. Step 3: Cross multiply
    525,853.90x = 788,780.85 × 193,386.70
  4. Step 4: Simplify right side
    525,853.90x = 152,539,725,604.70
  5. Step 5: Solve for x
    x = 152,539,725,604.70/525,853.90
  6. Step 6: Final answer
    x = 290,080.05

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.